HcG levels and pregnancy

Patient

Q: My Hcg level was 41 on Aug.31, then 404 on Sept.6, then 346 on Sept. 9... the RN at the clinic said it "doesn't sound good". I was told to come back in Tuesday and recheck the level to make sure it wasn't a lab error. I'm not bleeding or cramping. We did IUI on Aug. 13, so according to that... I would be 6 weeks today considering I ovulated that day and performed IUI that day. My last menstrual period was July 30. Am I miscarrying?

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